Vulnerability Description
When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy. This would have potentially resulted in more information than intended by the original origin being provided to the destination of the redirect. This vulnerability affects Firefox < 86.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 86.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1678545Issue TrackingPermissions RequiredVendor Advisory
- https://security.gentoo.org/glsa/202104-10Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-07/Release NotesVendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1678545Issue TrackingPermissions RequiredVendor Advisory
- https://security.gentoo.org/glsa/202104-10Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-07/Release NotesVendor Advisory
FAQ
What is CVE-2021-23971?
CVE-2021-23971 is a vulnerability with a CVSS score of 6.5 (MEDIUM). When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy. This would have potentially resulted in more information than intended by the ...
How severe is CVE-2021-23971?
CVE-2021-23971 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-23971?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.